Final answer:
Epiglottitis primarily affects children under 2 years of age.
Step-by-step explanation:
The correct statement regarding epiglottitis is c) it affects children under 2 years of age.
Epiglottitis is an inflammation of the epiglottis, which is the flap of cartilage that covers the larynx during swallowing and prevents food from entering the respiratory tract. It is most commonly caused by Haemophilus influenzae Type b infection. Before the use of the effective Hib vaccine, it primarily affected children 2 months through 5 years of age.